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Jack Sock tries to break into Roger Federer's changing room at ATP finals, this is SNEAKY | Tennis | Sport | Express.co.uk
![Roger Federer of Switzerland plays a return to Jack Sock of the United States during their singles tennis match at the ATP World Finals at the O2 Arena in London, Sunday, Nov. Roger Federer of Switzerland plays a return to Jack Sock of the United States during their singles tennis match at the ATP World Finals at the O2 Arena in London, Sunday, Nov.](https://c8.alamy.com/comp/2MPYNR9/roger-federer-of-switzerland-plays-a-return-to-jack-sock-of-the-united-states-during-their-singles-tennis-match-at-the-atp-world-finals-at-the-o2-arena-in-london-sunday-nov-12-2017-ap-photokirsty-wigglesworth-2MPYNR9.jpg)
Roger Federer of Switzerland plays a return to Jack Sock of the United States during their singles tennis match at the ATP World Finals at the O2 Arena in London, Sunday, Nov.
![London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2 London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2](https://c8.alamy.com/comp/KH2KB3/london-uk-12th-november-2017-jack-sock-usa-congratulating-roger-federer-KH2KB3.jpg)
London, UK. 12th November, 2017. Jack Sock (USA) congratulating Roger Federer (SUI) after Federer won the match by two sets in the singles competition in the Nitto ATP Finals at The O2
![ATP Finals: Sock ousts Zverev as Federer maintains perfect record - The Championships, Wimbledon - Official Site by IBM ATP Finals: Sock ousts Zverev as Federer maintains perfect record - The Championships, Wimbledon - Official Site by IBM](https://photo-assets.wimbledon.com/images/pics/large/s_sockatp.jpg)
ATP Finals: Sock ousts Zverev as Federer maintains perfect record - The Championships, Wimbledon - Official Site by IBM
![ATP Finals: Is a Roger Federer win a forgone conclusion? How dangerous is Jack Sock? Three burning questions ahead of the semi-finals - Sport360 News ATP Finals: Is a Roger Federer win a forgone conclusion? How dangerous is Jack Sock? Three burning questions ahead of the semi-finals - Sport360 News](https://sport360.com/wp-content/uploads/2017/11/GettyImages-867464442-1.jpg)
ATP Finals: Is a Roger Federer win a forgone conclusion? How dangerous is Jack Sock? Three burning questions ahead of the semi-finals - Sport360 News
![Jack Sock stuns world No 3 Alexander Zverev to make history at the ATP Finals | The Independent | The Independent Jack Sock stuns world No 3 Alexander Zverev to make history at the ATP Finals | The Independent | The Independent](https://static.independent.co.uk/s3fs-public/thumbnails/image/2017/11/16/23/jack-sock.jpg)
Jack Sock stuns world No 3 Alexander Zverev to make history at the ATP Finals | The Independent | The Independent
![Roger Federer starts bid for seventh ATP World Tour Finals title with victory over Jack Sock - Mirror Online Roger Federer starts bid for seventh ATP World Tour Finals title with victory over Jack Sock - Mirror Online](https://i2-prod.mirror.co.uk/incoming/article11510012.ece/ALTERNATES/s1200c/Day-One-Nitto-ATP-World-Tour-Finals.jpg)
Roger Federer starts bid for seventh ATP World Tour Finals title with victory over Jack Sock - Mirror Online
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